3. Always assume an electrical circuit to be __ unless you verify otherwise. a energized b. dead C. off

## Step1: <br />The question asks us to identify the correct assumption to make about an electrical circuit unless proven otherwise. <br /><br />## Step2: <br />In the context of electrical safety, it is always advised to assume that all electrical circuits are 'energized' unless proven otherwise. This is because assuming a circuit to be 'dead' or 'off' could lead to dangerous situations if the circuit is actually live.